Curved railing pony wall at stairs

[CElder]

The railing on my curved stairs is all wonky!  Attached is a screenshot of the issue and the plan file.  What did I do wrong?  I do pony walls like this for stairs all the time but this is my first time with a curved wall added to the mix.  I'm sure there's something I missed in the wall DBX but I can't find it.

 

TIA

 

curved wall stair rail issue.plan